condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.911635 0.0 1.82327 8 h after dark 2.23581 0.90067 3.57095 12 h after dark 2.239675 0.0 4.47935